While I could reproduce a similar issue, as mentioned in your earlier thread, I can't reproduce it anymore. (Jon fixed that in response to the bug report I filed, and that fix is definitely in 10.0.1.0.)
I've tried again, using XP and making the setup as similar to your screenshot as possible, but I couldn't get it to go wrong after trying for some time.
If you haven't already, contact GPSoftware Support (link in my sig) to send an official bug report.
Is anyone else reading the forum seeing anything similar? If so, it'd be useful to know your configurations.